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US11454249B2 - Heat dissipation fan - Google Patents

Heat dissipation fan Download PDF

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Publication number
US11454249B2
US11454249B2 US17/148,579 US202117148579A US11454249B2 US 11454249 B2 US11454249 B2 US 11454249B2 US 202117148579 A US202117148579 A US 202117148579A US 11454249 B2 US11454249 B2 US 11454249B2
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US
United States
Prior art keywords
blades
hub
heat dissipation
dissipation fan
reduction section
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Active
Application number
US17/148,579
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English (en)
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US20210215170A1 (en
Inventor
Tsung-Ting Chen
Wei-Chin Chen
Cheng-Wen Hsieh
Wen-Neng Liao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acer Inc
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Acer Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Assigned to ACER INCORPORATED reassignment ACER INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, TSUNG-TING, CHEN, WEI-CHIN, HSIEH, CHENG-WEN, LIAO, WEN-NENG
Publication of US20210215170A1 publication Critical patent/US20210215170A1/en
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Publication of US11454249B2 publication Critical patent/US11454249B2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow

Definitions

  • the invention relates to a fan, and more particularly, to a heat dissipation fan.
  • the thermal resistance of the system is reduced or the performance of the heat dissipation fan therein is improved.
  • the thermal resistance of the system is greater, thus reducing the air intake of the heat dissipation fan, so that air from the external environment does not readily enter the system to generate the thermal convection needed for heat dissipation.
  • the invention provides a heat dissipation fan, wherein wind pressure is effectively increased by generating at least one flow path between blades and forming a reduction section in the flow path.
  • a heat dissipation fan of the invention includes a housing, a hub, and a plurality of blades.
  • the hub is rotatably disposed in the housing.
  • the blades are disposed at a surrounding edge of the hub to be rotated with the hub.
  • the heat dissipation fan at least one flow path is formed between the blades, and at the same time the flow path is provided with a reduction section, and therefore a pressurizing effect is provided to the airflow flowing through the reduction section, thereby increasing the air pressure of the heat dissipation fan so as to effectively solve existing heat dissipation issues.
  • FIG. 1A is a schematic of a heat dissipation fan according to an embodiment of the invention.
  • FIG. 1B is a schematic of a hub and blades in the heat dissipation fan of FIG. 1A .
  • FIG. 1C is a top view of the hub and blades of FIG. 1B .
  • FIG. 2A is a schematic of a hub and blades according to another embodiment of the invention.
  • FIG. 2B is a top view of the hub and blades of FIG. 2A .
  • FIG. 3 , FIG. 4 , and FIG. 5 are partial schematics of a hub and blades of different embodiments of the invention, respectively.
  • FIG. 6 is a schematic of a hub and blades of another embodiment of the invention.
  • FIG. 1A is a schematic of a heat dissipation fan according to an embodiment of the invention.
  • FIG. 1B is a schematic of a hub and blades in the heat dissipation fan of FIG. 1A .
  • FIG. 1C is a top view of the hub and blades of FIG. 1B .
  • a heat dissipation fan 100 is, for example, a centrifugal fan including a housing 130 , a hub 110 , and a blade structure 120 .
  • the hub 110 is rotatably disposed in the housing 130 along an axis C 1 .
  • the blade structure 120 is disposed at the surrounding edge of the hub 110 to be rotated with the hub 110 , and the blade structure 120 has a plurality of blades.
  • the working fluid of the external environment enters the housing 130 via the air inlet located on the axial direction (the axis C 1 ) of the heat dissipation fan 100 and is driven by the blade structure 120 , and then is discharged from the air outlet located on the radial direction of the hub 110 .
  • the wide arrow shown in FIG. 1A represents the flow direction of the working fluid.
  • the blade structure 120 further includes a ring body 123 for connecting the blades, wherein the blades include a plurality of first blades 121 connected to the hub 110 and a plurality of second blades 122 not connected to the hub 110 .
  • each of the second blades 122 is located between two adjacent first blades 121 , and the ring body 123 is connected to the top of the first blades 121 and the top of the second blades 122 .
  • first blades 121 and the second blades 122 are connected in series.
  • a first divided path P 11 , a second divided path P 12 , a first reduction section U 1 , and a second reduction section U 2 are further formed, wherein the first reduction section U 1 is located at the first divided path P 11 and the second reduction section U 2 is located at the second divided path P 12 .
  • the reduction section herein means that the flow path P 1 (including the first divided path P 11 and the second divided path P 12 ) has a tapered profile in a radial direction away from the hub 110 , so that the working fluid of the external environment enters the housing 130 (shown in FIG.
  • first reduction section U 1 and the second reduction section U 2 of the present embodiment are staggered from each other along a radial direction away from the hub 110 .
  • the second blades 122 have a first end E 1 adjacent to the hub 110 and a second end E 2 away from the hub 110 and the ring body 123 is connected to the second end E 2 and the end of the first blades 121 away from the hub 110 , such that the second end E 2 of the second blades 122 and the end of the first blades 121 away from the hub 110 form the first reduction section U 1 and form the second reduction section U 2 with the first blades 121 at the first end E 1 of the second blades 122 .
  • the hub 110 and the blades and the ring body 123 of the blade structure 120 may be plastic injection-molded or made by metal stamping or bending, or may be made by mixing different materials of metal and plastic and insert molding.
  • FIG. 2A is a schematic of a hub and blades according to another embodiment of the invention.
  • FIG. 2B is a top view of the hub and blades of FIG. 2A .
  • a blade structure 220 includes the ring body 123 and a partition 222 , wherein the ring body 123 is connected to the plurality of first blades 121 , two adjacent first blades 121 form a flow path P 2 , and the partition 222 is disposed at the ring body 123 and located between the two adjacent first blades 121 .
  • the partition 222 is also located at the end of the first blades 121 away from the hub 110 .
  • the partition 222 and the two adjacent first blades 121 form a first divided path P 21 , a second divided path P 22 , a first reduction section U 3 , and a second reduction section U 4 , and are located on two opposite sides of the partition 222 respectively, wherein the first reduction section U 3 is located at the first divided path P 21 , the second reduction section U 4 is located at the second divided path P 22 , and the positions of the first reduction section U 3 and the second reduction section U 4 are consistent with each other along the radial direction of the hub 110 , that is, as shown in FIG. 2B , the first reduction section U 3 and the second reduction section U 4 are substantially located at the ring body 123 (the reduction section shown in FIG.
  • the partition 222 has a first end E 3 adjacent to the hub 110 and a second end E 4 away from the hub 110 , and the profile of the partition 222 is gradually expanded away from the hub 110 , so as to form the first reduction section U 3 and the second reduction section U 4 for which the positions are consistent (both located at the second end E 4 ) with the two adjacent first blades 121 .
  • the partition 222 and the ring body 123 may be an integrally formed structure.
  • the hub 110 , the ring body 123 , and the partition 222 may be made by insert injection molding with the first blades 121 made of metal.
  • FIG. 3 , FIG. 4 , and FIG. 5 are partial schematics of a hub and blades of different embodiments of the invention, respectively.
  • the ring body 323 passes through the first blades 121 and the second blades 122 to divide the flow path P 1 into layers along the axial direction, and the axial direction and the axis C 1 of the hub 110 are consistent.
  • the first divided path P 11 and the second divided path P 12 are substantially divided into upper and lower layers.
  • a ring body 423 is connected to the top of the first blades 121 and the bottom of the second blades 122 to achieve a configuration opposite to the embodiment shown in FIG. 1B .
  • a blade structure 520 of the present embodiment includes the first blades 121 , the second blades 122 , and ring bodies 123 and 523 .
  • the difference from the above embodiments is that the ring bodies 123 and 523 have different radial sizes, wherein the ring body 123 is connected to the end of the first blades 121 away from the hub 110 and the second end E 2 of the second blades 122 , and the ring body 523 is connected to the first end E 1 of the second blades 122 and the first blades 121 so that the structural strength and rigidity of the first blades 121 and the second blades 122 are increased via the dislocated ring bodies 123 and 523 .
  • FIG. 6 is a schematic of a hub and blades of another embodiment of the invention.
  • a blade structure 620 includes first blades 621 , second blades 622 , and a connecting portion 623 , wherein the first blades 621 are similar to the first blades 121 and are connected to the hub 110 and extended therefrom.
  • the second blades 622 are similar to the second blades 122 and are located between two adjacent first blades 621 and are not connected to the hub 110 .
  • the connecting portion 623 of the present embodiment is connected between the end of the first blades 621 away from the hub 110 and the end of the second blades 622 away from the hub 110 .
  • the first blades 621 , the second blades 622 , and the connecting portion 623 are formed by stamping and bending a metal plate, and thus have both the structural strength of an integrated structure and the effect of a simplified manufacturing process.
  • the heat dissipation fan in the heat dissipation fan, at least one flow path is formed between the blades, and at the same time the flow path is provided with a reduction section, and therefore a pressurizing effect is provided to the airflow flowing through the reduction section, thereby increasing the air pressure of the heat dissipation fan so as to effectively solve existing heat dissipation issues.
  • the reduction section is provided with a second blade or a partition between two first blades extended from the hub, and a ring body is provided to facilitate connection. Therefore, the blade gap may be smoothly reduced at the end away from the hub to achieve the effect of pressurizing the working fluid leaving the blades.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US17/148,579 2020-01-14 2021-01-14 Heat dissipation fan Active US11454249B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW109101239A TWI775036B (zh) 2020-01-14 2020-01-14 散熱風扇
TW109101239 2020-01-14

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US11454249B2 true US11454249B2 (en) 2022-09-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230204044A1 (en) * 2021-12-27 2023-06-29 Nidec Corporation Impeller
US20230279868A1 (en) * 2022-03-04 2023-09-07 Delta Electronics, Inc. Impeller

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113250978B (zh) * 2020-02-11 2024-05-07 宏碁股份有限公司 散热风扇
US11536286B2 (en) * 2020-07-30 2022-12-27 Microsoft Technology Licensing, Llc Systems and methods for improving airflow in a centrifugal blower
CN114458616B (zh) * 2022-02-28 2023-01-06 联想(北京)有限公司 一种散热风扇
TWI850655B (zh) * 2022-04-29 2024-08-01 宏碁股份有限公司 離心式散熱風扇
TWI812198B (zh) * 2022-04-29 2023-08-11 宏碁股份有限公司 離心式散熱風扇

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TWI636789B (zh) 2016-08-16 2018-10-01 臺中榮民總醫院 腸道微菌療法、其所使用之組合物及該組合物之製備方法
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CN103414562A (zh) 2013-08-02 2013-11-27 广州菁英信息技术有限公司 基于url指纹技术的用户权限控制方法及装置
CN104424537A (zh) 2013-09-04 2015-03-18 纬创资通股份有限公司 健身管理服务方法及相关系统
CN103795897A (zh) 2014-01-21 2014-05-14 深圳市中兴移动通信有限公司 自动生成背景音乐的方法和装置
TWI607751B (zh) 2014-12-09 2017-12-11 Taichung Veterans General Hospital Statin compounds for the treatment of gastric cancer
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TWI638048B (zh) 2015-03-09 2018-10-11 財團法人國家衛生研究院 高成長腸病毒71型(ev71)病毒株及其疫苗
CN104888405A (zh) 2015-05-07 2015-09-09 青岛英派斯健康科技有限公司 一种配重控制系统及方法
CN204900330U (zh) 2015-08-06 2015-12-23 佛山市顺德区美的电热电器制造有限公司 风扇叶轮、离心风扇及家用电器
WO2017028704A1 (zh) 2015-08-18 2017-02-23 阿里巴巴集团控股有限公司 伴奏音乐的提供方法和装置
WO2017028250A1 (zh) 2015-08-18 2017-02-23 张焰焰 用语音和指纹验证账号登录的方法和移动终端
CN105344101A (zh) 2015-11-19 2016-02-24 广州玖的数码科技有限公司 一种画面与机械运动同步的模拟赛车装置及模拟方法
CN205273872U (zh) 2016-01-12 2016-06-01 卢晟明 通用型智能车载无人机系统
TWI628189B (zh) 2016-02-23 2018-07-01 財團法人國家衛生研究院 脂質化存活素（ｓｕｒｖｉｖｉｎ）及其用以預防及治療癌症之用途
TWM532604U (zh) 2016-06-30 2016-11-21 Taiwan Paiho Ltd 用於頭戴式虛擬實境（ｖｒ）顯示裝置之襯布可拆式臉部襯墊結構
TWI636789B (zh) 2016-08-16 2018-10-01 臺中榮民總醫院 腸道微菌療法、其所使用之組合物及該組合物之製備方法
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US20230204044A1 (en) * 2021-12-27 2023-06-29 Nidec Corporation Impeller
US11841030B2 (en) * 2021-12-27 2023-12-12 Nidec Corporation Impeller
US20230279868A1 (en) * 2022-03-04 2023-09-07 Delta Electronics, Inc. Impeller
US12221975B2 (en) * 2022-03-04 2025-02-11 Delta Electronics, Inc. Impeller

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